Home / 107,832.80-161,749.20-90,336.80

Finding the Fourth Proportional to 107,832.80, 161,749.20 and 90,336.80

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Solution

The fourth proportional to 107,832.80, 161,749.20 and 90,336.80 is: 135,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,832.80 : 161,749.20 = 90,336.80 : x
  2. Step 2: Convert to fraction form
    107,832.80/161,749.20 = 90,336.80/x
  3. Step 3: Cross multiply
    107,832.80x = 161,749.20 × 90,336.80
  4. Step 4: Simplify right side
    107,832.80x = 14,611,905,130.56
  5. Step 5: Solve for x
    x = 14,611,905,130.56/107,832.80
  6. Step 6: Final answer
    x = 135,505.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.